Topological quantum phase transition in an exactly solvable model of a chiral spin liquid at finite temperature

Suk Bum Chung, Hong Yao, Taylor L. Hughes, Eun Ah Kim

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Abstract

We study the finite-temperature nature of a quantum phase transition between an Abelian and a non-Abelian topological phase in an exactly solvable model of the chiral spin liquid of Yao and Kivelson [Phys. Rev. Lett. 99, 247203 (2007)]. As it is exactly solvable, this model can serve as a testbed for developing better measures for describing topological quantum phase transitions. We use the global flux and entanglement entropy to characterize this phase transition, and we discuss to what extent the existence of a topologically ordered ground state with non-Abelian excitations is revealed at finite temperature.

Original languageEnglish
Article number060403
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume81
Issue number6
DOIs
StatePublished - 4 Feb 2010

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